From mboxrd@z Thu Jan  1 00:00:00 1970
From: olly@survex.com (Olly Betts)
Date: Fri, 2 Oct 2009 07:57:55 +0000 (UTC)
Subject: [sup-talk] [PATCH] xapian: do less work for update_message_state
References: <1252867449-30734-1-git-send-email-rlane@club.cc.cmu.edu>
	<1254339542-sup-886@masanjin.net> <1254341186-sup-4357@zyrg.net>
	<1254404707-sup-9253@masanjin.net> <1254416360-sup-8957@zyrg.net>
Message-ID: <slrnhcbck3.5ah.olly@msgid.survex.com>

On 2009-10-01, Rich Lane <rlane at club.cc.cmu.edu> wrote:
> Excerpts from William Morgan's message of Thu Oct 01 09:46:20 -0400 2009:
>> Reformatted excerpts from Rich Lane's message of 2009-09-30:
>> > They're about 3 times faster on my machine with this patch. An
>> > optimization the Xapian devs have been planning to make (and that this
>> > patch is necessary to take advantage of) should increase performance
>> > much more.
>> 
>> Awesome. Out of curiousity, what's the optimization?
>
> replace_document currently deletes all the old postings and inserts new
> ones. It can be optimized to make the minimal set of modifications.

This is the ticket for it:

http://trac.xapian.org/ticket/250

Cheers,
    Olly